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Finding the Fourth Proportional to 66,486.78, 91,747.04 and 37,419.39

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Solution

The fourth proportional to 66,486.78, 91,747.04 and 37,419.39 is: 51,636.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,486.78 : 91,747.04 = 37,419.39 : x
  2. Step 2: Convert to fraction form
    66,486.78/91,747.04 = 37,419.39/x
  3. Step 3: Cross multiply
    66,486.78x = 91,747.04 × 37,419.39
  4. Step 4: Simplify right side
    66,486.78x = 3,433,118,084.01
  5. Step 5: Solve for x
    x = 3,433,118,084.01/66,486.78
  6. Step 6: Final answer
    x = 51,636.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.